package com.softa.shiro.realm;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.Set;

import javax.annotation.Resource;

import com.softa.dao.model.SysUser;
import com.softa.service.system.LogService;
import com.softa.service.system.ResourceService;
import com.softa.service.system.RoleService;
import com.softa.service.system.UserService;
import com.softa.utils.Constants;
import com.softa.utils.DateUtils;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.ByteSource;

import com.softa.dao.model.SysLog;

/**
 * 
*   后台登陆认证授权
 * Created by yangl on 2017/8/6.
*
 */
public class AdminRealm extends AuthorizingRealm {

    @Resource
    private UserService userService;

    @Resource
    private RoleService roleService;

    @Resource
    private LogService logService;

    @Resource
    private ResourceService resourceService;
    
    // 授权 
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        String username = (String)principals.getPrimaryPrincipal();

        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        if(Constants.ADMIN.equals(username)){
            authorizationInfo.setRoles(roleService.findAllRoles());
            authorizationInfo.setStringPermissions(resourceService.findAllPermissions());
        }else{
            Set<String> roleSet=userService.findRoles(username);
            authorizationInfo.setRoles(roleSet);
            authorizationInfo.setStringPermissions(userService.findPermissions(username));
        }
        return authorizationInfo;
    }
    // 认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {

        String username = (String)token.getPrincipal();

        SysUser user = null;

        if(Constants.ADMIN.equals(username)){
            user = userService.findAdminUser();
        }else{
            user = userService.findByUsername(username);
        }

        if(user == null) {
            throw new UnknownAccountException();//没找到帐号
        }

        if(Boolean.TRUE.equals(user.getLocked())) {
            throw new LockedAccountException(); //帐号锁定
        }

        System.out.println(getName());

        //交给AuthenticatingRealm使用CredentialsMatcher进行密码匹配，如果觉得人家的不好可以自定义实现
        SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(
                user.getUsername(), //用户名
                user.getPassword(), //密码
                ByteSource.Util.bytes(user.getUsername() + user.getSalt()),//salt=username+salt
                getName()  //realm name
        );
        
        /**日志记录 */
        SysLog log = new SysLog();
		log.setOpertype("登录");
		String createip= null;
		try {
			InetAddress host = InetAddress.getLocalHost();
			createip = host.getHostAddress();
			log.setContent(username+"登录");
		} catch (UnknownHostException e) {
			e.printStackTrace();
		}
		log.setCreateip(createip);
		log.setCreatetime(DateUtils.getyyyyMMddHHmmsssplit(new Date()));
		log.setType(1);
		logService.saveLog(log);
		
        return authenticationInfo;
    }

    @Override
    public void clearCachedAuthorizationInfo(PrincipalCollection principals) {
        super.clearCachedAuthorizationInfo(principals);
    }

    @Override
    public void clearCachedAuthenticationInfo(PrincipalCollection principals) {
        super.clearCachedAuthenticationInfo(principals);
    }

    @Override
    public void clearCache(PrincipalCollection principals) {
        super.clearCache(principals);
    }

    public void clearAllCachedAuthorizationInfo() {
        getAuthorizationCache().clear();
    }

    public void clearAllCachedAuthenticationInfo() {
        getAuthenticationCache().clear();
    }

    public void clearAllCache() {
        clearAllCachedAuthenticationInfo();
        clearAllCachedAuthorizationInfo();
    }

}
